When the valve is installed, the user not only needs to understand its installation method, because the protection of the valve during installation is also very important. If you do not pay attention to the installation is likely to cause damage or leakage of the valve, so that will cause a lot of trouble. So when to install the valve how to protect it? Xiao Bian to introduce the following specific protection measures to install the valve it. Check valve protection facilities In order to prevent the check valve leakage or failure after the media backflow, causing product quality degradation, resulting in accidents and other adverse consequences, before and after the check valve set one or two shut-off valve. If you set two shut-off valves, can facilitate the removal of the check valve for maintenance. Safety valve installation of protective equipment generally do not set before and after the isolation valve, only in individual cases, can be used. If the media force contains solid particles, affecting the safety valve can not be shut off after take-off, before and after the safety valve to install a gate valve with a seal, the valve should be in the fully open state, the valve and the relief valve directly installed a pass DN20 inspection valve to the atmosphere. When appeasing the discharge of wax and other media at room temperature for the solid state, or vacuum gasification and light liquid medium temperature below 0 degrees Celsius, the safety valve needs steam with heat. Safety valve for corrosive media, depending on the corrosion resistance of the valve, consider adding a corrosion-resistant explosion-proof membrane at the valve inlet. Gas relief valve is generally set by its path a bypass valve, as a manual vent. Pressure relief valve protection facilities Pressure relief valve installation facilities generally have three forms. Before and after the valve equipped with a pressure gauge to facilitate the observation of the valve before and after the valve pressure. After the valve is also equipped with a fully enclosed safety valve to prevent the valve fails, the valve pressure exceeds the normal pressure take-off, including the valve system. Drain pipe installed in front of the valve before the shut-off valve, mainly the role of drainage river flushing, and some traps. The main function of the bypass pipe is to close the shut-off valve before and after the pressure reducing valve, open the bypass valve, and adjust the flow by hand to play the role of temporary flow-through to repair the pressure reducing valve or replace the pressure reducing valve after the pressure reducing valve fails. Traps Protective Traps There are two types of bypass pipes on the side of the traps, bypass pipes without bypass, condensate recovery and non-recovery of condensate, drainage and other special requirements. Installations can be installed in parallel . Traps with bypass valves, the main role in the pipeline starts to run, used to discharge large amounts of condensate. When servicing traps, it is not advisable to drain the condensate from the bypass pipe, which causes the steam to escape into the backwater system. Under normal circumstances, may not be installed bypass pipe. Only the heating temperature has strict requirements, continuous production of heat equipment installed bypass pipe.